Compilare: main.cpp: In function 'long long int solve(long long int)': main.cpp:85:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(poz < nr) ^ main.cpp: In function 'int main()': main.cpp:104:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%lld", &n,&m); ^ main.cpp:107:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lld", &x); ^ main.cpp: In function 'long long int solve(long long int)': main.cpp:90:17: warning: 'poz' may be used uninitialized in this function [-Wmaybe-uninitialized] return v[poz]; ^